Authors: P. Bochsler
Reference: Proc. of the IVth
International Seminar: Manufacturing of Scientific Space Instrumentation,
V.M. Balebanov (ed.), Academy of Sciences,
Space Research Institute, Frunze, (1989) 137-147.
Abstract:
The objective of the CELIAS experiment is to determine the composition,
charge state, and energy distribution of solar wind ions and of
suprathermal ions in the interplanetary plasma. Launch of the payload to the
L1 Lagrangian Point, 1.5 million km upstream towards the Sun, is
scheduled for 1995. The SOHO spacecraft will provide a three-axis stabilized
platform, thus allowing a 100% duty cycle for solar wind
investigations.
The CELIAS experiment consists of four subunits: a Proton Monitor (PM), a
Charge-Time-of-Flight sensor (CTOF), a Mass-Time-of-Flight sensor (MTOF),
and a Suprathermal-Time-of-Flight sensor (STOF). The three Time-of-Flight
sensors are linked to individual electrostatic
energy-analyzing deflection systems, which are optimized for large
geometrical factors and wide angular acceptance. The last requirement
is a consequence of the three-axis stabilization of the SOHO spacecraft.